<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录页面</h1>
<form action="">
    <input type="text" name="username" placeholder="用户名"><br>
    <input type="text" name="password" placeholder="密码"><br>
    <input type="button" value="登录" @click="login()">
</form>
<!--引入CDN服务器的框架文件-->
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://lf3-cdn-tos.bytecdntp.com/cdn/expire-1-M/vue/2.6.14/vue.js"></script>
<script>
    let v = new Vue({
        el: "form",
        methods: {
            login: function () {
                let data = new FormData(document.querySelector("form"))
                axios.post("/login", data).then(function (response) {
                    if (response.data == 1) {
                        alert("登录成功!")
                        location.href = "/"
                    } else if (response.data == 2) {
                        alert("用户名不存在")
                    } else {
                        alert("密码错误")
                    }
                })
            }
        }
    })

</script>
</body>
</html>